Ratchet wrench adapted to operate with a different wrench
An improved ratchet wrench is provided. In one embodiment, the ratchet wrench comprises a pawl and a square drive tang both at one end, an enclosed square box portion at the other end, the box portion being adapted to connect to a drive tang at a ratcheting end of a second typical longer wrench. The drive tang of the ratchet wrench receives in a drive opening of a socket which has its driving end engaged with a nut or bolt head such that torquing is provided thereto by turning the second wrench. In another embodiment, the drive tang of the ratchet wrench is replaced by a cylindrical socket adapted to receive a nut or bolt head. The invention is particularly suitable to a narrow working circumstance.
The present invention relates to ratchet wrenches and more particularly to such a ratchet wrench being connectable to a different, preferably longer wrench for being adapted to a different working circumstance when used with each other.
BACKGROUND OF THE INVENTIONConventionally, ratchet wrench is classified as a socket ratchet wrench and a ratchet wrench having a drive tang. Either is further classified as a long one, a short one, etc. For the ratchet wrench having a drive tang, it is classified as a long one, a short one, and a special one, each will be described in detailed below.
A conventional short ratchet wrench having a drive tang is shown in
Another conventional long ratchet wrench having a drive tang is shown in
A further conventional special ratchet wrench having a drive tang is shown in
But all of the above are unsatisfactory for the purpose for which the invention is concerned for the following reasons: It is impossible of connecting two of them to use (i.e., use with each other being impossible). Typically, a user has to buy all of the above ratchet wrenches such that the user can work in any one of many different working conditions when use of one of the ratchet wrenches is required. This inevitably will increase the financial burden borne on the user. Also, carrying all of the above ratchet wrenches is a cumbersome, laborious work. Moreover, only several insertion choices (i.e., the pegs 14 inserted into the apertures 13) are available for the special ratchet wrench. Hence, the angle adjustment of the handle is limited. This can limit applications. Thus, the need for improvement still exists.
SUMMARY OF THE INVENTIONIt is an object of the present invention to provide a ratchet wrench, comprising a pawl disposed at one end; a drive tang extended downward from the pawl; an enclosed box portion disposed at the other end, wherein the box portion is operative to connect to a drive tang of a longer second wrench selected from a plurality of different wrenches including ratchet wrenches, and the drive tang of the ratchet wrench is operative to receive in a drive opening of a socket which has its driving end engaged with a working piece such that torquing is provided to the working piece by turning the second wrench. The present invention is particularly suitable to a narrow working circumstance when used with the second wrench. Moreover, by utilizing the present invention, the financial burden borne on users of buying many unnecessary tools is eliminated. Also, the present invention can operate conveniently.
It is another object of the present invention to provide a ratchet wrench, comprising a pawl disposed at one end; a socket formed in an inner surface of an opening at end; and an enclosed box portion disposed at the other end, wherein the box portion is operative to connect to a drive tang of a longer second wrench selected from a plurality of different wrenches including ratchet wrenches, and the socket is operative to engage with a working piece such that torquing is provided to the working piece by turning the second wrench.
In one aspect of the present invention, labor is saved when the ratchet wrench of the present invention is used with the longer second wrench (e.g., a ratchet wrench).
In another aspect of the present invention, the longer second wrench (e.g., a ratchet wrench) can be set at an angle with respect to the ratchet wrench of the present invention in an operating position.
The above and other objects, features and advantages of the present invention will become apparent from the following detailed description taken with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Referring to
Thus, a detailed description thereof is omitted herein for the sake of brevity.
Referring to
The long ratchet wrench 40A further comprises a pawl 42A having a reversing lever 421A, and a quick release mechanism 43A. Note that the pawl 42A, the reversing lever 421, and the quick release mechanism 43A are prior art. Thus, a detailed description thereof is omitted herein for the sake of brevity. Alternatively, a square drive tang 41B of a long wrench 40B is adapted to receive in the box portion 24 to couple together prior to operating. But it will not be described further for the sake of brevity.
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Next, a clockwise rotation of the long ratchet wrench 40A can clockwise turn the ratchet wrench 20 of the invention with respect to the socket 30 with the drive tang 41A being neutral while the pawl 42A is turning clockwise. As such, the ratchet wrench 20 of the invention turns clockwise to quickly fasten the bolt 50.
Referring to
While the invention herein disclosed has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of the invention set forth in the claims.
Claims
1. A ratchet wrench, comprising:
- a pawl disposed at one end;
- a drive tang extended downward from the pawl;
- an enclosed box portion disposed at the other end,
- wherein the box portion is operative to connect to a drive tang of a second wrench selected from a plurality of different wrenches, and the drive tang of the ratchet wrench is operative to receive in a drive opening of a socket which has its driving end engaged with a working piece such that torquing is provided to the working piece by turning the second wrench.
2. The ratchet wrench of claim 1, wherein the box portion has a square section.
3. The ratchet wrench of claim 2, further comprising at least one pair of opposite detent apertures disposed on the square inner surface of the box portion.
4. The ratchet wrench of claim 1, wherein the drive tang of the ratchet wrench has a square section.
5. A ratchet wrench, comprising:
- a pawl disposed at one end;
- a socket formed in an inner surface of an opening at end; and
- an enclosed box portion disposed at the other end,
- wherein the box portion is operative to connect to a drive tang of a second wrench selected from a plurality of different wrenches, and the socket is operative to engage with a working piece such that torquing is provided to the working piece by turning the second wrench.
6. The ratchet wrench of claim 5, wherein the box portion has a square section.
7. The ratchet wrench of claim 6, further comprising at least one pair of opposite detent apertures disposed on the square inner surface of the box portion.
8. The ratchet wrench of claim 5, wherein the socket is cylindrical.
Type: Application
Filed: Sep 9, 2004
Publication Date: Mar 9, 2006
Inventor: Leo Shih (Taichung)
Application Number: 10/938,345
International Classification: B25B 13/46 (20060101); B25B 23/16 (20060101); B25G 1/00 (20060101);